Defect-collecting image input apparatus with image sensor

Details Defect-collecting image input apparatus with image sensor Defect-collecting image input apparatus with image sensor

1991-05-16

1992-03-10

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358209, 35821313, H04N 314

Patent

active

050953680

ABSTRACT:
According to the present invention, the image input apparatus is adapted to sample the image signal read by the linear image sensor by means of the sampling means in order to output image data. The object of the present invention is accomplished by a provision of image input apparatus comprising a memory provided with positional data previously stored therein of defective elements of the image sensor corresponding to respective picture elements of a linear image sensor and a sampling control means for preventing, when the difference value between the adjacent pictures of an image signal is less than the predetermined one, a sampling means from carrying out sampling at the present picture element corresponding to said defective element of the image sensor in accordance with said memory and outputting image data of the sampling signal of the adjacent previous picture element, and for allowing sampling, when said difference value is more than the predetermined value, at the present picture element according to said defective element of the image sensor in compliance with said memory and outputting the image data of the sampling signal of the adjacent present picture elements as they are.

REFERENCES:
patent: 4179711 (1979-12-01), Nagumo
patent: 4524390 (1985-06-01), Lemke
patent: 4535359 (1985-08-01), Fearnside
patent: 4567525 (1986-01-01), Endo et al.
patent: 4739495 (1988-04-01), Levine
patent: 4920428 (1990-04-01), Lin et al.
patent: 5047863 (1991-09-01), Pape et al.

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